Senior Security Architect: Secure-by-Design Leader

Thames Water Ltd; Reading; Hybrid; GBP 73,000 - 86,000; Full time

Benefits offered by this job

Car Allowance

Annual Leave 26 days + Bank Holidays

Performance pay

Pension Scheme

Health & Wellbeing benefits

Job summary

Thames Water Ltd is seeking a Senior Security Architect to lead security architecture across transformation programmes and regulatory environments. You will shape strategy, drive domain leadership in IAM, PAM, SIEM and cloud security, and ensure secure-by-design practices throughout the delivery lifecycle.

You will collaborate with Enterprise and Solution Architects, Security Engineering, and operations teams to translate requirements into effective controls and measurable outcomes, fostering

Qualifications

• Extensive experience operating as a Security Architect within complex enterprise environments.
• Experience leading security architecture activities across the full solution lifecycle.
• Experience providing architecture assurance, design reviews, governance, and stage-gate processes.
• Demonstrable experience with structured threat modelling and security risk assessments.

Responsibilities

• Develop and maintain Thames Water’s security architecture strategy, roadmaps, and target-state architectures.
• Lead security architecture workshops, design reviews, and assurance activities across projects and programmes.
• Translate business and regulatory requirements into proportionate security controls and mitigation strategies.
• Develop and govern security principles, guardrails, standards, reusable patterns and reference architectures.

Skills

Security Architecture Strategy

Security Domain Leadership

Secure Solution Design

Threat Modelling

Security Control Assurance

Stakeholder Engagement

Security Architecture Artefacts

Operational Security Alignment

Security Frameworks & Standards

Cloud Security Architecture

Job description

Thames Water Ltd is seeking a Senior Security Architect to lead security architecture across transformation programmes and regulatory environments. You will shape strategy, drive domain leadership in IAM, PAM, SIEM and cloud security, and ensure secure-by-design practices throughout the delivery lifecycle.

You will collaborate with Enterprise and Solution Architects, Security Engineering, and operations teams to translate requirements into effective controls and measurable outcomes, fostering